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kodGreya [7K]
3 years ago
5

The height of a right cylinder is 3 times the radius of the base. The volume of the cylinder is 247 cubic units.

Mathematics
1 answer:
babymother [125]3 years ago
3 0

Answer:

8.91 units.

Step-by-step explanation:

If the height = h then the radius = h/3.

The volume = 247 = π r^2 h

247 = π (h/3)^2 h

(h/3)^2 h = 247/π

h^3 / 9 = 247 /π

h^3 = 9*247/ π

h= 8.91 units.

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Step-by-step explanation:

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Step-by-step explanation:

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8 0
3 years ago
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Leno4ka [110]
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6 0
2 years ago
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Please help!!<br> Each pair of polygons is similar. Find the value of x.
Simora [160]

Answer in fraction form: x = 55/4

Answer in decimal form: x = 13.75

Both forms are equivalent, but they say it in a slightly different way.

===========================================================

Work Shown:

AC/QY = CD/YW

(x+5)/15 = 5/4

4(x+5) = 15*5

4x+20 = 75

4x = 75-20

4x = 55

x = 55/4

x = 13.75

------------

Explanations:

  • The first step is possible because the polygons are similar. Similar figures have their corresponding sides be in the same proportion or ratio. Note how side AC has the double red angle (at point A) and a single red angle (point C). The side QY has the same idea in the same order. This is why AC corresponds to QY. The ratio AC/QY is the same as CD/YW.
  • In the second step, I plugged in the expressions that the diagram shows. This is the substitution property.
  • On step 3, I cross multiplied. The general format is A/B = C/D cross multiplies to A*D = B*C.
7 0
3 years ago
Read 2 more answers
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